Curious arts

(Acts 19:19), magical arts; jugglery practised by the Ephesian
conjurers. Ephesus was noted for its wizard and the "Ephesian
spells;" i.e., charms or scraps of parchment written over with
certain formula, which were worn as a safeguard against all
manner of evils. The more important and powerful of these charms
were written out in books which circulated among the exorcists,
and were sold at a great price.